Improved machine for cettting and dressing stone



. holders, with the tools attached.

AncninALD f uitrit Ctetrs Munro, or acercara, AND WILLIAM B. amasar, 4or GLASGOW, NORTH aniram,

Leemlaanz No. 104,055, (man .new 7, 1ero,

To all whom it may concern.`

Be it known that we, ARCHIBALD Mimmo, of Arbroath, Fortr county, North Britain, and WILLIAM B. Anmsomof Glasgow, Lanark county,North Britain, have invented certain vImprovements in Tools'for Dressing Stone, &e. and.. we do hereby declare the following to bea full, clear, and exact description of theseme.

l Nature and Object of the Invention.

This invention relates to tools forl cutting or drcssing stone, slate, rock, or othersimilar substances, the tools'being caused to .operate upon the said substances by means of mechanism provided with toolhelders,in which the tools are retained in.a .working position.

Description of the .Accopqiangfing Dawii'zg. Figure 1(Sheet No. 1) is a side elevation of sufi.

` cient of a. stone-dressing machine to show one mode of employing our improved tools, and the construction` of the same.

Figure 2, an edge view of iig. 1.

Figures 3 and 5, side views illustrating another mode of arranging the cutters.

Figures 4 and 6, sectional views of figs. 3 and 5. Figures `7 to 17, detached views showing the construction of the tools. l

Figures 1, 2, 3, and 4, (Sheet No. 2,) -views of tool- Figure 5, a section on the line A a, iig. 4. Figure 6, a side view of a drum, with the tools arrangedupon the same.

Figure 7, an end.`view. of fig. 6. Figures 8.to 12, detached views of the tools and parts of the holders. Figures l to 9, (Sheet No. 3,) views showing modified forms `0f holders, and the manner of applying the same to the'blades.

Figures' 10 and 11, instrumentsl for securing the tools in their positions,

Figure 1, (Sli-eet No. 4,) a. side view ofa revolving drum, showing the same arranged for dressing stone steps or cornices.

Figure 2, a transverse section oi' figure 1.

Figure 3, an end view-oi` iig. 1.

Figures 4 and 7, side views of drums of different forms.

Figures 5 and 6,.cud views of figs. 4 and 7.

Figure 1 (Sheet No. 5) is a side view oi'a barrel vfor dressing semicircular columns, &c.

Figures 2 toll, views illustrating tools of difierent forms.

Figures 12 to 16, views sho .Jing modified forms of holders'.

IFigures 17 to24, views showing modified-forms of tools. f

General n Description.

Before'proceeding to describe the construction of our improved tools, and the manner ot' using the same,

it may be stated that the said tools may be made of iron or steel,or of compound metals, (chilled, il desired,) cast, forged, or pressed into shape, and teunV peied or hardened, or of malleable iron, forged or pressed into shape, and after-ward case-hardened.

In Sheet No. 1, B is a plate or bladecontaining' holders, A, carrying the tools a., the holders A beleg held-in the plate B by dovetail or v-joiuts, as hereinafter more fully set forth. i y 'The tools a are retained.:v in place by the action or pressure ofthe pinching-screwsb on the movable jaws C, and, when the tools are worn out, they are removed` at which time new or fresh by loosening the screws b, tools are inserted in the holders or sockets..

' "hen the tools are usedv with a plate or blade such as that shown at tigs. `1 and'2, the plate or blade l is firmly xed upon a shaft which passes through a f hole in the boss D. The shaft, being part of any stonecutting or dressing-machine wherein such tools may be employed, (which machines, however, form no pari` of' this invention) is'caused to move or travel over the stone to be operated upon, or, vice rc1-sa, the stone is caused to move or travel under or over it.

The edge of the plate or blade B is slightly inclined from the center toward the extremities, as shown, so that each tool a, in .a direction proceeding` from the outermost tool toward the center of the'edge of the 'plate or blade, is a. little lower down than that which precedes it. By this arrangement of the tools, when they are cutting or dividing a block of stone or other material, the tool numbered 1 enters the cutiirst and proceeds throughout the cut in the stone at one depth,

.while that marked 2 follows at a slightly lower depth,-

according to the nature of the which dpth varies, stone, rock, slate, or other material to 'be operated upon, and so on, according to the number of tools employed; thus, by using a number of tools, each making but a shallow cut oi' itself throughout the stroke, the aggregate of these shallow cuts represent a deep cut per stroke or travel of the tools over the stone or other material.

On further referring to iig. 1, it will he observed that, on either side of the center line, the tools face in opposite directions, so. that a cut is made on both the forward aud'baekward tra'velor stroke of the blade or plate or stone, according' as either the -blade or plate 'or stoneis -xed or travels, or' the -tools may be ar -ranged in the blade or plate to face in 'one direction.

Figs. 3 and 4 are respectively' a half side elevation and half transverse section of a circular disk .for carrying the tools a and tool-holders b, similar to what .are shown at and I), igs. 1 and 2.

Figs. o and (i are respectively a half side eleva' -tio'nand half transverse section of a serrated disk for carrying the tools a,.cach serration b of which. forms .a jaw otfstbe tool-holder, between which `jaws b and the gripers c the tools a are securely held by means of tbepinchng-screws d.

sheet '2 of the vappended drawing, fig. .1 isla side elevation of a tool-holder or socket for holding another for'm of tool, and which isor may be attached toa revolving or reciprocating or fixed blade or plateof a machine for cuttr g or dressing stone, slate, rock, ,or other substances, and showing one method'ot' holding the tool therein. The tool is of a truncated conical form.

The-recess or hole in the tool-holder B is formed to correspond with the smaller end of the tool A, which is. secured in the holder by the spring bolt D, the head or upper'end 'of which bolt tits into the interior conical hollowof the -tool A, and the tails' a and b of'. which,- .by their outward pressure against' the sides of the hole l formed' in the tool-bolderB Ato receive. them', retain the tool A .firmly in its postition, at .the same time allowing of its easy removal when 'required'.

The tool-holder, B, is attached to the revolving, or

i reciprocating, or fixed disk blade, or plate of the. cutting for dressing-machine, by. a recess formed in'thc b lade or plate, whose sides correspond to' the groove in thjef tool-holder, seen in dotted lines at figs. 1, 2, and 3, and marked x.. l

' Figa 2 is a side elevation of a similar tool-holder to that above described, but in this case the tool A is secured in the holder by o nut, a, and bolt b.. Fig. v3 is also an 'eleva ion ot' a similar tool-bolder,

but in.thiscasc,'in lien of "securing the tool A, as in the two previous modifications, it is retained in tbe' holder' B by a boltpd, and cotter b. It 4is preferred, however,\to x the tools by spring bolts, as -shoivn at iig. 1, orbya plain bolt, titting v`tightly into the hole v or socket-in the holder B.

'Fig 4 is an elevation of a Vcircular-saw blade or pl'ate,'A ,v inwhich are carried several toolholders, B, similar in construct-ion -tothose above described, in

-reference totbs sheet of drawing. Some ofthe holderszB, :in iig. 4, namely,thosermarkedl, 2,-and 3, ref speetively, are shown partlyin section,as also the tooiso, retained therein.'

-Fig-inia transverse section, on the line 1 2, ofthe portion,'.ottbe'.circularesaw bla'dc'or plate shown at tig-4,' y l 'The tool-holders shown at figs. 1, 2, 3, 4,vand 5,

have a semicircular' hole, y, formedin their under" edges, co-receivers wedge, by which .they may' be driven ont of tbedisk or plate, .when required.

y "At'ii .his shownan-elevation ot' part of a. barrel, ,'for ress ingstone, slate, marble, and-other 'subi atancegland which barrel is fixed to a revolving shaftl of a stone-drcssing machine, 'such niac lowered, as required, so that the tools (a, carried in tbc b olders B, may cnt -or dress any part ot' the stone, or other material, carried on the table ot' the'rnacbine.. The tool-holder B'may befdovetailed into the barrel A, as sbown at jig. 7,' or the tool-bolder .may be screwtapped or wedged' into the barrel A, or attached to it.

. in notches or bellows y or check, formed in tl l hine,'"liowever, forming no part ot the present invention.l 1 The shaft may be sltuatedvertioally or horizontally,' o r at any angle, and is capable of being raised or Isig? is an end elevation'l of the barrel A an tools'sho at iig. 6. The tool-boldrs t the holders` hereinbelore dcscribed,'bing formed duplex, that is to say, each holder contains two tools, but holders for one, orany other number of tools, may be employed..

At figs. 1 and. 2, sheet 3, areV shown a side and front i elevation, respectively, of another'4 form ot` duplex .tool-holder. 1n this instance, the tools a are placed formed to receive them, in the tool-holder B.

The griping-piece, C, by which the tools 'are beld in position, is hinged to the tool-bolder B by the 1mb:V

D, so that the griping-piece acts as a lever, the grin# ing power being obtained by means of thescrew L, tappedinto the' griping-piece, and acting against tbc shoulder xof the tool-holder B.

Fig. 3 is a side elevation, and fig. 4 a front elevation of 'another form ot' holder, for one tool. In this-arrangement tbe tool a is held in the tool-holder by the lever or griper b, which is secured by the bolt C to the ytool-bolder d.

At lig. 5 is shown a side elevation of another method of securingv the tool-holders in the blade or plate fa circular saw. The tool-holders B B are, intbis instance, arranged in pairs, as shown,'the tools a c being secured in the tool-holders inthe manner now' next set forth.

The tools an, are formed with projections' o n the i back, which `tinto corresponding grooves in the face --I of the holders B B, and in which grooves they are securely retained by the gripers C, which-slide in openings made in the disk. When it is required to remove the tools a a from the holders. B, the

.gripers C are -forced'out by a lever,snch as is shown at tig.10, the pins'd dof the lever being made to tit -into'the holes e @formed in the tool-holders B and gripers C. l

In the gripers C slots, F, are formed, of' suicientj length to allow'the tools a a to be taken` out and replaced.

The gripers Cfare also formed with slots, E, through which pins, G, pass, in order to prevent the gripers,

when forced ont by tbelever, shown at iig. 10, ii'om falling out of their places.

Fig. 6 represents a side elevation and iig. 7 a fronti .I

elevationof another form of tool-holder, which may holders, in which the griper a. is placed between the.

edge of the 4tool-holder b and the disk or plate C, the griping-piecev c heilig vactuated vby a lever, as in the two preceding modifications.

Fig. 9 is a side elevation of another modification of tool-holder, in which the disk or plato ais formed to receive the tool b and griping-piece c. In this modiiication'the griper e is removed,.when required, by means ot' a. lever' similar to that shown at tig. 11, which lever is formed with an elongated pin or stud,

d, which lits into a corresponding hole, af, Vformed part` e -ly inthe disk or plate a and partly .in the gripcr c. '.Lbe tool-holders, figs. 1, 2, 3, 4, 6, 7 and S, nre,

by preference, allforxned with a hole, a', in their hottonl edge, so that, by forcing a ltaper-drill; or.' punch therein, that is to say, between the body of the bolder plate, they may be driven ont and the disk blade or' re toolfholderbrto receive it.

' front elevation, iig. 2, a'transverse section, and Ii'g. 3,

- ing barrel, they may be nished by. a planing-mation of a barrel for dressing"copes,'or coping-stones or gripers A, which pass over the eye-bolts or studs 21, which pass through the eyes in the bolts or studs B.

mbeore described in reference to figs'. 1, 2,=and 3,

- scribed.

' shapes or condgurations of tools, made of any of the n sheet d, of the appeinleddrawing, lig. 1 is a an end elevation of a revolvingr barrel or drum, which 'may he employed in dressing door or stair-steps, or it may he employed for plain orv flat lwork, or moldings, the shape or contour of the revolving barrel heilig formed according to the nature of the work to be pei'-, formed. v

On the appended drawing therevolving barrel 'is shown asl dressing door or stair-steps. The part of thev barrelwhich is employed in dressing the plain parts of the steps, A, B, andi), is constructed, longitndinally, of separate segments or seotions,l..D D, as shown at iig. 1. The parts E. E, employed in dressing the bead or molding ou the front ofthe steps, are formed by themselves, so that they may be removed, and the halt` of the barrel or drum lengthened'by the addition of other disks or sections tothe shaft of the barrel or drum, when required.

.lhat this may b e effected the more easily, the -segments are formed in halves, which are held together. by dovetall joints or tongues, F, as shown particularly in end elevation at iig. 3.

. The face of the drum or barrel is grooved `transversely, as shown at fig, 2, to receive the tools; which. are held in position by the gripers or jaws x.

Should the stones require' to, be finished in a better' lstyle of work than can be accomplished by the dresschine, after having been roughly cut by the barrel, as hereinbefore set forth.

In lien of arranging the barrel in a horizontal po-l sition, as shown, it may be arranged to work in a vertical position, o'r at any required angle. v

Fig. et is aside elevation, and g. 5 an end levafor walls or parapets. l

The tools are itted into the' barrel in the manner shownat hg. 5, and are held in position by the jaws B, one end of which studs is screwed into the barrel.

The gripe'rs are secured by the wedges or cotters The barrel is made in halves, which are held together by the dovetailfjoints or tongues C, as here-v sheet 4. A

The dotted lines on fig. 4 represent the figure which is generated by the revolution ot' the barrel and the sectional form of the copeproduced.

Fig. 6 is a side elevation, and lig. '7 an v end elevation of a dressing barrel, in which tools a, in section of the form known as angle-iron, are used. The general and various forms of these tools are shown more particularly in elevation at figs. 2, 3, and 4,'aud in section at figs. 5, 6, and 7, sheet 5, of the appended drawing, and as hereinafter more particularly den sheet 5,1ig. l is a side view of a barrel for dressing semicircular copes, s tories, columns, or cyl-'- inders,plaiu or tinted, the details of which are the same or similar to those of the other dressing-barrels hereinbefor'e described.

Having now described the various modifications of tool-holders and other details of stone-cutting or dressing machinery shown on the appended sheets of drawing, we now proceed to specify more particularly the varios shapes or configurations of tools shown thereon.

On sheet 1, figs. 7, 8, 9, 10, 1l, and 12, are, respectively, plans and elevations ol' three different materials hereinbefore set forth.

0n the hack of each of the tools shown at figs.' 7,

8, 9, and 1), A-shaped projections a are formed, which '104.055 fit into corresponding grooves in the tool-holders, to

'which they are fitted.

l On figs. `l1 and`12-the projection-u is circular, as shown. f Fig. 13 is a plan, and fig. 14 an elevation of another for-m of cutting-tool, the face and edges of which are slightly concave, and liavingthe projection a, by which it :is secured in the. tool-holder, of a circular form, as shown onthe drawing. v

' Figs. 15 land 16 are, respectively, a,p1an and eleva- `.tiouct a cutting-tool, having the projection .a, by

which it is secured in the tool-holder, of a rectangular form, 'and the face and edges concave, as in the preceding modilicatio'n.

Fig. 17 is a plan of a triangular tool, which may either have the face andedges concave, as shown in the two. preceding modifications, or of the configuration-shown in elevation at iigs. 8 and 10, The projection a, on the back of' the tool, is that by which it is held in the tool-holder.

' On sheet 2, in lieu of employing truncated conical tools of circular' section, as shown at A in the various tool-holders, conica-l tools of elliptical or oval section, as shown at figs. 8 and 9,. ortools square in section, as shown at ligs. 10 and 11, may be employed.

At iig. 12 is shown au elevation of a truncated conical tool, with a shank or stem, a, formed .ou it, 'by which `it is held in the tool-holder or socket. 0n sheet 5, figs. 2, 3, 4, 5, 6, and 7, are, respectively, views of tools having an angle-iron section, which .may be attached to a barrel for dressing stone, slate, marble, or other substances. l

At figs. 6 and 7, sheet 4, is shown one modification of the tools so attached. One edge ofthe tools is formed into sharp projections a, which are used for roughing ont the vblocks of stone or other material being operated npon,and the other edge b is made plain,

and employed in producing a smooth'or finished snrface.- l

After the block of stone or other material has been dressed by the revolving barrel or drum, it. may he planed or smoothed by tools, such as are shown at figs.'8,9,10, and 11, which tools arc fittedl into a planing-machine for that purpose, or these tools may be fitted cna sha'i't on the same machine as the rcvolving barrel.

Fig. 12 is an end elevation, and tig.13A a longitudinal section of another modification of tool and tool-holder, which may be used in cutting or dressing stone, slate, marble, or other material.

The tool Ais formed with a hollow shank or stem, B, and is secured in the holder C by means' of an India-rubber or other spring, D, placed in. a hollow or socket, E, formed in the holder C to receive it.

At figs. 1 4, 15, andIG are shown different views ot' another modification of a tool for cutting or dressing stone, slate, marble, or other material. The toolis formed with the cutting or dressing-hice A concave; iu the manner shown at fig. 14,`and also with a solid stem or shank,'B, which fits into the tool-holdenas shown at figs. 15 and 16.

Fig. 1i' is a plan and iig. 18 an elevation of a horseshoe-shaped tool which may also be used for cutting or dressingstone or other subst-ance; and tig. 19 is a transverse sect-ion, and fig. 20 a plan ot" a-.cuttingor dressing-tool, which is formed with a concave edge.`

On the face of the tool a scmicircnlar indentation, a, is formed, into which fits a corresponding projec-t tion on the tool-holder, and on thebaclt ci' the tool a projection, b, is formed, which fits into a groove ol similar form in the griping-jaw of the tool-holder.

Fig. 21 is a plan and. tig. 22 a side elevation of a form of cutting-tool which may be attached to the Ibarrel orto the .revolvin disk shown ou sheet 2, in

lien of the`tools shown t iercin. ln this instance the scribed.'

Figr23 is a. plan 'and iig. 24 a sidi; elevation of a serrated-tool, which may also be attached to a. revolv- Y ing barrel for dressing stone; slate, rock-,for other ma,-

Clims.

"i .1, tool for` dressingstone, consisting of a solid or holiow. cone, disk, yor plnte, Asecured tothe edge of 'a permanent or detachabieprojection neplzite-disk o rholder, anclat right angles, orthereztbont, to' the side of the saidprojetion;

2. The combination of said tool, it clamp, and a.

i screw or other device .for pressing the ela/tmp against'- the 17001; vv 3. AThe said tool, adapted .to' a. recess in a`holder,

in combination with a permanent or detachable stem,V

eiitending into the holder,'aud retaining the tool in --its position'. f A

In testimony wherowe have signed our names n to this specification in the presence of two' subscribing witnesses; ARCHD.y MUNR-O.

W. B.. ADAJSLISON.y v Witnesses:

J. BBowN, J. C. MAC'ANDIE; 

